I have owncloud 8.2 running on centos 7. I have integrated it with MS 2008 r2 Active Directory. Everything just works perfect. One thingI am interested is user migration. Users from mysql database have information which is shared with other users as well. It is just very simple thingto instruct user to login with AD account and define folder of mysql account to sync files to new user account, but what can I do with files and folders they have already shared with each other. Also this is not item of my question but, after integrating to AD names that match with mysql user AD users have added prefix _XXXX. Has anyone tried same thing? If I manually change in oc_share table fields like: share_with, uid_owner to AD user will it solve my problem?